The 2-in-1 Charger & Back Up Battery is a compact high-capacity battery pack that is capable of charging and powering your iPod and iPhone. The Back Up Battery is designed for the times when your drained device needs instant power. The 2-in-1 Charger & Back Up Battery can buy you extra time for music, videos, internet access and phone calls. Also compatible with new iPod nano 5th Gen, iPod touch 3rd Gen & iPod classic 160GB.